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LEVEL 2.5
REPAIR DOCUMENTATION
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C62 LEVEL 2.5 REPAIR DOCUMENTATION
V 1.1
V1.1 Level 2,5 C62
Page 1 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
TABLE OF CONTENTS:
1 2 3 4 5 6 7 8 9 10
INTRODUCTION..........................................................................................................................................3 IO-CONNECTOR.............................................................. FEHLER! TEXTMARKE NICHT DEFINIERT. RTC BATTERY...........................................................................................................................................11 TRANSISTOR SOT-323 (FOR LEDS)......................................................................................................16 TRANSISTOR SOT-323 (FOR VIBRA) ...................................................................................................21 FUSE .............................................................................................................................................................26 VOLTAGE SUPRESSOR ............................................................................................................................31 TRANSISTOR SOT-223 ..............................................................................................................................36 ZENER DIODE.............................................................................................................................................41 LED COLOR YELLOW............................................................................................................................46
V1.1 Level 2,5 C62
Page 2 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
1 Introduction
The C62 is a triple band (EGSM900/GSM1800/GSM1900) handportable phone with a Li-Ion battery. There are three different colour variants. The colours are Eagle White, Pigeon Blue and Cherry Red. For every colour, there are eight different keymat variants: Latin, Chinese Stroke, Hebrew, Cyrillic, Thai, Bopomofo, Arabic and Greek. Partnumber on IMEI label: C62: S30880-S9230-Axxx,
where xxx may be any number from 100, 101, 102... This manual is intended to help you carry out repairs on level 2.5, meaning limited component repairs. Failure highlights are documented and should be repaired in the local workshops. It must be noted that all repairs have to be carried out in an environment set up according to the ESD (Electrostatic Discharge Sensitive Devices) regulations defined in international standards. If you have any questions regarding the repair procedures or technical questions about the spare parts do not hesitate to contact our technical support team in Kamp-Lintfort, Germany: Tel.: +49 2842 95 666 Fax: +49 2842 95 4302 E-mail: [email protected]
V1.1 Level 2,5 C62
Page 3 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
2 IO-Connector
2.1
Affected Units C62
2.1.1 Type:
2.1.2 Affected IMEIs / Date Codes:
All / All
2.1.3 Affected SW-Versions:
All
2.2
Fault Description
2.2.1 Fault Symptoms for customers: Charging problems. Problems with external loudspeaker or microphone when using a car kit. Problems with accessories connected at the system connector. Problems with SW booting. 2.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-Tester. 2.3 Priority:
........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
2.4
Repair Documentation
2.4.1 Description of procedure:
V1.1 Level 2,5 C62
Page 4 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
2.4.1.1 Diagnosis
Check the system connector visually. Watch for oxidation and dry joints!
2.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective system connector. Avoid excessive heat! Watch out for the surrounding components!!
Figure 2-1 2
Remove the defective connecter.
Figure 2-2 3
Add solder on the pads.
Figure 2-3
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
4
Add flux on the pads.
Figure 2-4 5
Re-solder the new system connector by using a hot air blower. Check that the connector is straight and exactly in right place.
Figure 2-5 6
New connector is in its place.
Figure 2-6
2.4.1.3 Repair by SW-Booting
Not possible!
2.4.1.4 Test
Charging problems can be discovered by measuring the voltage between pins 1 (Power) and 2 (GND). Voltage should be between 5V and 9,5V if system connector is working.
V1.1 Level 2,5 C62 Page 6 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
Circuit diagram of system connector
Test if accessories function well. In order to detect an accessory when plugged into the system connector, the following pins on the connector are used in the detection scenario: POWER, TX/D+, RX/D-, DATA/CTS, CLK/DCD and RTS. Table 1 shows the pins and their possible use in a detection scenario.
Table 1: Accessory coding options Pin No. 1 2 3 4 5 6 7 Signal name POWER GND TX/D+ RX/DDATA/CTS RTS CLK/DCD Default level L(Z) GND H(Z) L(Z) H(Z) H(Z) H(Z) Default direction Off Out In In In In Possible coding options Open or charge source (Set by accessory) High/Low (Set by Phone) Open, Tx or high (Set by accessory) Open, Tx or low (Set by accessory) Open, Tx or low (Set by accessory) Open, Tx or low (Set by accessory)
The different coding options for the supported accessories can be seen in Table 2.
V1.1 Level 2,5 C62
Page 7 of 51 Company Confidential Copyright 2002 Siemens AG
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Table 2: Accessory coding table
RX/DOPEN TX/D+ TX/D+ HIGH
DATA/CTS OPEN GND GND OPEN
CLK/DCD OPEN OPEN GND GND
RTS OPEN TX/D+ TX/D+ OPEN
Description Default: No accessory connected Headset Headset with PTT pressed Car Kit portable
2.4.2 List of needed material
2.4.2.1 Components
System connector female 12pin SMD Part Number: L36197-F5121-F730
2.4.2.2 Jigs and Tools
Hot air blower Tweezers Inspection lamp
2.4.2.3 Special Tools
None
2.4.2.4 Working materials
Flux Solder 2.4.3 Drawings
Figure 1: C62 board, system connector side
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
Figure 2: C62 system connector placement (top view)
Figure 3: C62 system connector
Table 3: Siemens C62 system connector pin description
V1.1 Level 2,5 C62
Page 9 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
Pin 1 2 3 4 5
Name POWER GND TX RX DATA/CTS
IN/OUT I O I I/O
Notes Charging Current Common GND Serial interface, used for Flash programming and ITP commands Serial interface, used for Flash programming and ITP commands Serial interface, used for ATcommands. Data line for accessory bus. Use as CTS in data operation. Used for accessory detection Used for accessory detection Serial interface, used for ATcommands. Used for accessory detection Dual -ended (other end is Audio R) output for external receiver (mono) Used for 12V flash programming voltage Dual -ended (other end is Audio L) output for external receiver (mono) GND external microphone Input for external microphone
6 7 8 9 10 11 12
RTS CLK/DCD Audio L Audio_Ref/V PP Audio R Gnd_Micro Micro
I I/O O I O I
Table 4: Lumberg signal levels Pin no. 3 4 5 6 7 Signal name TX/D+ RX/DDATA/CTS RTS CLK/DCD Level VOH VOL VIH VIL VIH VIL VOH VOL VIH VIL VIH VIL Min [V] 2.17 0 2.10 0 2.10 0 2.17 0 2.10 0 2.10 0 Max [V] 3.00 0.20 3.60 0.48 3.30 0.46 3.00 0.42 3.30 0.46 3.30 0.46
V1.1 Level 2,5 C62
Page 10 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
3 RTC battery
3.1
Affected Units C62 All / All
3.1.1 Type: 3.1.2 Affected IMEIs / Date Codes:
3.1.3 Affected SW-Versions:
All
3.2
Fault Description
3.2.1 Fault Symptoms for customers: The clock is reset when battery is switched off and on. 3.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 3.3 Priority:
........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
3.4
Repair Documentation
3.4.1 Description of procedure:
3.4.1.1 Diagnosis
Check the RTC battery visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 11 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
3.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective RTC battery. Avoid excessive heat! Watch out for the surrounding components!
Figure 3-1 2
The defective RTC battery is removed.
Figure 3-2 3
Add solder on the pads.
Figure 3-3
V1.1 Level 2,5 C62
Page 12 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Add flux on the pads.
Figure 3-4 5
Re-solder the new RTC battery by using a hot air blower and a soldering iron if necessary. Check that the RTC battery is exactly in right place. Watch surrounding components!
Figure 3-5 6
New RTC battery is in its place.
Figure 3-6
3.4.1.3 Repair by SW-Booting
Not possible!
3.4.1.4 Test
Retest the handset after the repair. If clock resets when battery is removed, RTC battery is faulty. Measurement with voltage meter, the voltage should be 1.8V. Note! If battery is empty, wait that it charges and voltage raises up to 1.8V.
V1.1 Level 2,5 C62 Page 13 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
3.4.2 List of needed material
3.4.2.1 Components
RTC-battery SMD VA6 Part Number: L36145-K1310-X293
3.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
3.4.2.3 Special Tools
None
3.4.2.4 Working materials
Flux Solder 3.4.3 Drawings
Figure 1: C62 board, RTC battery side
V1.1 Level 2,5 C62
Page 14 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
Figure 2: C62 RTC battery placement (top view)
Figure 3: C62 RTC battery
V1.1 Level 2,5 C62
Page 15 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4 Transistor SOT-323 (for LEDs)
4.1 Affected Units C62 All / All
4.1.1 Type: 4.1.2 Affected IMEIs / Date Codes:
4.1.3 Affected SW-Versions:
All
4.2
Fault Description
4.2.1 Fault Symptoms for customers: Display light does not work. 4.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 4.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
4.4
Repair Documentation
4.4.1 Description of procedure:
4.4.1.1 Diagnosis
Check the transistor visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 16 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective transistor. Avoid excessive heat! Watch out for the surrounding components!
Figure 4-1 2
Add solder on the pads.
Figure 4-2 3
Add flux on the pads.
Figure 4-3
V1.1 Level 2,5 C62
Page 17 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new transistor by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 4-4
4.4.1.3 Repair by SW-Booting
Not possible!
4.4.1.4 Test
Retest the handset after the repair.
The circuit diagram of Transistor SOT-323 (for LEDs)
4.4.2 List of needed material
4.4.2.1 Components
TR NPN SOT323 SMD Part number: L36197-F5122-F76
4.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
V1.1 Level 2,5 C62
Page 18 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4.4.2.3 Special Tools
None
4.4.2.4 Working materials
Flux Solder 4.4.3 Drawings
Figure 1: C62 board, transistor SOT323 (for LEDs) side
Figure 2: C62 transistor SOT323 (for LEDs) placement (top view)
V1.1 Level 2,5 C62
Page 19 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
Figure 3: C62 transistor SOT323 (for LEDs)
V1.1 Level 2,5 C62
Page 20 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
5 Transistor SOT-323 (for Vibra)
5.1 Affected Units C62 All / All
5.1.1 Type: 5.1.2 Affected IMEIs / Date Codes:
5.1.3 Affected SW-Versions:
All
5.2
Fault Description
5.2.1 Fault Symptoms for customers: Vibrator does not work. 5.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 5.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
5.4
Repair Documentation
5.4.1 Description of procedure:
5.4.1.1 Diagnosis
Check the transistor visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 21 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
5.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective transistor. Avoid excessive heat! Watch out for the surrounding components!
Figure 5-1 2
Add solder on the pads.
Figure 5-2 3
Add flux on the pads.
Figure 5-3
V1.1 Level 2,5 C62
Page 22 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new transistor by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 5-4
5.4.1.3 Repair by SW-Booting
Not possible!
5.4.1.4 Test
Retest the handset after the repair. - GROUND+LEFT VIBRA PAD should have VBATT (4.2V). - COILS L404, L405 should have resistance of 1.0 Ohm. Change V413 if vibrator does not work after replacement.
The circuit diagram of Transistor SOT-323 (for vibra)
5.4.2 List of needed material
5.4.2.1 Components
TR NPN SOT323 SMD Part number: L36197-F5122-F76
5.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
V1.1 Level 2,5 C62 Page 23 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
5.4.2.3 Special Tools
None
5.4.2.4 Working materials
Flux Solder 5.4.3 Drawings
Figure 1: C62 board, transistor SOT323 (for vibra) side
Figure 2: C62 transistor SOT323 (for vibra) placement (top view)
V1.1 Level 2,5 C62
Page 24 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
Figure 3: C62 transistor SOT323 (for Vibra)
V1.1 Level 2,5 C62
Page 25 of 51 Company Confidential Copyright 2002 Siemens AG
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6 Fuse
6.1 Affected Units C62 All / All
6.1.1 Type: 6.1.2 Affected IMEIs / Date Codes:
6.1.3 Affected SW-Versions:
All
6.2
Fault Description
6.2.1 Fault Symptoms for customers: Charging does not work. Accessories do not work. 6.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 6.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
6.4
Repair Documentation
6.4.1 Description of procedure:
6.4.1.1 Diagnosis
Check the fuse visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 26 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
6.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective fuse. Avoid excessive heat! Watch out for the surrounding components!
Figure 6-1 2
Add solder on the pads.
Figure 6-2 3
Add flux on the pads.
Figure 6-3
V1.1 Level 2,5 C62
Page 27 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new fuse by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 6-4
6.4.1.3 Repair by SW-Booting
Not possible!
6.4.1.4 Test
Retest the handset after the repair. Measure resistance over fuse (F403), it should be 0 Ohm. Measure transistor SOT-223 (V421) PIN1+GROUND, it should be 6.2V (zener voltage), if it's not, then the zener diode (V414) is faulty. Measure V421 PIN2+GROUND, it should be 8.3 V (charging voltage, not charging mode), if it's not, then the Voltage suppressor (V419) is faulty. Measure V421 PIN3+GROUND, it should be 5.7V (lowered voltage), if it's not, then the V421 is faulty.
The circuit diagram of Fuse V1.1 Level 2,5 C62 Page 28 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
6.4.2 List of needed material
6.4.2.1 Components
Fuse low profile 1A 1206 SMD Part number: L36197-F5122-F79
6.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
6.4.2.3 Special Tools
None
6.4.2.4 Working materials
Flux Solder 6.4.3 Drawings
Figure 1: C62 board, fuse side
V1.1 Level 2,5 C62
Page 29 of 51 Company Confidential Copyright 2002 Siemens AG
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Figure 2: C62 fuse placement (top view)
Figure 3: C62 fuse
V1.1 Level 2,5 C62
Page 30 of 51 Company Confidential Copyright 2002 Siemens AG
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7 Voltage supressor
7.1 Affected Units C62 All / All
7.1.1 Type: 7.1.2 Affected IMEIs / Date Codes:
7.1.3 Affected SW-Versions:
All
7.2
Fault Description
7.2.1 Fault Symptoms for customers: Charging does not work. Accessories do not work. 7.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 7.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
7.4
Repair Documentation
7.4.1 Description of procedure:
7.4.1.1 Diagnosis
Check the voltage supressor visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 31 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
7.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective voltage supressor. Avoid excessive heat! Watch out for the surrounding components!
Figure 7-1 2
Add solder on the pads.
Figure 7-2 3
Add flux on the pads.
Figure 7-3
V1.1 Level 2,5 C62
Page 32 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new voltage supressor by using a hot air blow and a soldering iron if necessary. Watch surrounding components!
Figure 7-4
7.4.1.3 Repair by SW-Booting
Not possible!
7.4.1.4 Test
Retest the handset after the repair. Measure resistance over fuse (F403), it should be 0 Ohm. Measure transistor SOT-223 (V421) PIN1+GROUND, it should be 6.2V (zener voltage), if it's not, then the zener diode (V414) is faulty. Measure V421 PIN2+GROUND, it should be 8.3 V (charging voltage, not charging mode), if it's not, then the Voltage suppressor (V419) is faulty. Measure V421 PIN3+GROUND, it should be 5.7V (lowered voltage), if it's not, then the V421 is faulty.
The circuit diagram of Voltage suppressor V1.1 Level 2,5 C62 Page 33 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
7.4.2 List of needed material
7.4.2.1 Components
Zener transient voltage supressor 12V max 1000W Part number: L36197-F5122-F81
7.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
7.4.2.3 Special Tools
None
7.4.2.4 Working materials
Flux Solder 7.4.3 Drawings
Figure 1: C62 board, Voltage supressor side
V1.1 Level 2,5 C62
Page 34 of 51 Company Confidential Copyright 2002 Siemens AG
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Figure 2: C62 Voltage supressor placement (top view)
Figure 3: C62 voltage supressor
V1.1 Level 2,5 C62
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8 Transistor SOT-223
8.1 Affected Units C62 All / All
8.1.1 Type: 8.1.2 Affected IMEIs / Date Codes:
8.1.3 Affected SW-Versions:
All
8.2
Fault Description
8.2.1 Fault Symptoms for customers: Charging does not work. 8.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 8.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
8.4
Repair Documentation
8.4.1 Description of procedure:
8.4.1.1 Diagnosis
Check the transistor visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 36 of 51 Company Confidential Copyright 2002 Siemens AG
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8.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective transistor. Avoid excessive heat! Watch out for the surrounding components!
Figure 8-1 2
Add solder on the pads.
Figure 8-2 3
Add flux on the pads.
Figure 8-3
V1.1 Level 2,5 C62
Page 37 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new transistor by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 8-4
8.4.1.3 Repair by SW-Booting
Not possible!
8.4.1.4 Test
Retest the handset after the repair. Measure resistance over fuse (F403), it should be 0 Ohm. Measure transistor SOT-223 (V421) PIN1+GROUND, it should be 6.2V (zener voltage), if it's not, then the zener diode (V414) is faulty. Measure V421 PIN2+GROUND, it should be 8.3 V (charging voltage, not charging mode), if it's not, then the Voltage suppressor (V419) is faulty. Measure V421 PIN3+GROUND, it should be 5.7V (lowered voltage), if it's not, then the V421 is faulty.
The circuit diagram of Transistor SOT-223 V1.1 Level 2,5 C62 Page 38 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
8.4.2 List of needed material
8.4.2.1 Components
Transistor NPN SOT-223 Part number: L36197-F5122-F77
8.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
8.4.2.3 Special Tools
None
8.4.2.4 Working materials
Flux Solder 8.4.3 Drawings
Figure 1: C62 board, transistor SOT-223 side
V1.1 Level 2,5 C62
Page 39 of 51 Company Confidential Copyright 2002 Siemens AG
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Figure 2: C62 transistor SOT-223 placement (top view)
Figure 3: C62 transistor SOT-223
V1.1 Level 2,5 C62
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9
9.1 Affected Units
Zener diode
9.1.1 Type: 9.1.2 Affected IMEIs / Date Codes:
C62 All / All
9.1.3 Affected SW-Versions:
All
9.2
Fault Description
9.2.1 Fault Symptoms for customers: Charging does not work. 9.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 9.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
9.4
Repair Documentation
9.4.1 Description of procedure:
9.4.1.1 Diagnosis
Check the zener diode visually. Watch for dry joints!
V1.1 Level 2,5 C62
Page 41 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
9.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Use a hot air blower to remove the defective zener diode. Avoid excessive heat! Watch out for the surrounding components!
Figure 9-1 2
Add solder on the pads.
Figure 9-2 3
Add flux on the pads.
Figure 9-3
V1.1 Level 2,5 C62
Page 42 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003
4
Re-solder the new zener diode by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 9-4
9.4.1.3 Repair by SW-Booting
Not possible!
9.4.1.4 Test
Retest the handset after the repair. Measure resistance over fuse (F403), it should be 0 Ohm. Measure transistor SOT-223 (V421) PIN1+GROUND, it should be 6.2V (zener voltage), if it's not, then the zener diode (V414) is faulty. Measure V421 PIN2+GROUND, it should be 8.3 V (charging voltage, not charging mode), if it's not, then the Voltage suppressor (V419) is faulty. Measure V421 PIN3+GROUND, it should be 5.7V (lowered voltage), if it's not, then the V421 is faulty.
The circuit diagram of Zener diode V1.1 Level 2,5 C62 Page 43 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
9.4.2 List of needed material
9.4.2.1 Components
Zener diode 6.2V max 350mW SOT23 SMD Part number: L36197-F5122-F78
9.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
9.4.2.3 Special Tools
None
9.4.2.4 Working materials
Flux Solder 9.4.3 Drawings
Figure 1: C62 board, zener diode side
V1.1 Level 2,5 C62
Page 44 of 51 Company Confidential Copyright 2002 Siemens AG
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Figure 2: C62 zener diode placement (top view)
Figure 3: C62 zener diode
V1.1 Level 2,5 C62
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10 LED color yellow
10.1 Affected Units C62 All / All
10.1.1 Type: 10.1.2 Affected IMEIs / Date Codes:
10.1.3 Affected SW-Versions:
All
10.2
Fault Description
10.2.1 Fault Symptoms for customers: No even light in the keymat or dark area in the keymat. LEDs are not lit. 10.2.2 Fault Symptom on GSM-Tester: This fault cannot be detected with a GSM-tester. 10.3 Priority: ........ Mandatory
........ Repair ........ Optional ........ Not Yet Defined
10.4
Repair Documentation
10.4.1 Description of procedure:
10.4.1.1
Diagnosis
Check the yellow LED visually. Use the diode test function of a multimeter to check the status of the diode.
V1.1 Level 2,5 C62 Page 46 of 51 Company Confidential Copyright 2002 Siemens AG ICM CCQ GRM 10/2003
The typical voltage drop on the diode is 1.7V when testing the diode function with the multimeter.
10.4.1.2 Repair by component change
# 1
Figure
Instruction
Note
Remove the domesheet from the PWB.
Figure 10-1 2
Use a hot air blower to remove the defective yellow LED. Avoid excessive heat! Watch out for the surrounding components!
Figure 10-2 3
Add solder on the pads.
Figure 10-3
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
4
Add flux on the pads.
Figure 10-4 5
Place the LED according to Fig.13-5, anode on the right, cathode on the left.
Direction of the board in the picture: system connector is at the bottom (See Fig.13-6)
Figure 10-5 6
Figure 10-6 7
Re-solder the new yellow LED by using a hot air blower and a soldering iron if necessary. Watch surrounding components!
Figure 10-7
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
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Mount the domesheet in its place. Use a new domesheet if the old one was damaged during removal.
Use the the dome sheet Jig. F30032-P333A1
Figure 10-8
10.4.1.3
Repair by SW-Booting
Not possible!
10.4.1.4 Test
Retest the handset after the repair. Adding voltage (1.8V) on one of the LED, If LEDs work well, the light is lid. - If single LED is empty, one can be changed (LEDs are in parallel connection). - If all LEDs are empty, check TR SOT-323 (V412) with voltage meter. - Voltage over V412 should be over 0.5V. - PIN1+GROUND (when light is on) voltage should be 1.6V. - PIN3+GROUND (when light is on) voltage should be VBATT-1.8V (2.8V).
The circuit diagram of the LED color yellow
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
10.4.2 List of needed material
10.4.2.1
Components
LED yellow 1.60x0.8x0.6mm SMD Part number: L36197-F5122-F72
10.4.2.2 Jigs and Tools
Hot air blower Soldering iron Tweezers
10.4.2.3 Special Tools
None
10.4.2.4 Working materials
Flux Solder 10.4.3 Drawings
Figure 1: C62 board, LED colour yellow side
V1.1 Level 2,5 C62
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ICM CCQ GRM 10/2003
Figure 2: C62 LED colour yellow placement (top view)
Figure 3: C62 LED colour yellow
V1.1 Level 2,5 C62
Page 51 of 51 Company Confidential Copyright 2002 Siemens AG
ICM CCQ GRM 10/2003